Sash-lock and burglar-alarm.



Patented Dec. 4, |900'.

RITCHIE. sAsHl LcK AND BunaLAn ALARM.

(Application led Sept. I3,` 1900.)

(No Model.)

34a/0MM WT lIH NNITnD STATES PATENT Orricn.

SAMUEL RITCHIE, OF TOMAHAWK LAKE, WISCONSIN, ASSIGNOR OF ONE- THIRD TO EUGENE R. LE FEVRE, OF SAME PLACE.

sAsH-LOCK AND BUReLAR-ALARM.

SlECIFICATION forming part of Letters Patent No. 663,101, dated December 4, 1900. Application ned september 13,1900. serial Nazast. (No modem of an improved and simple construction ofsnch character as to provide a safe and secure lock for one or both sashes of a window and also a provision for sounding an alarm should an attempt be made to open a window-sash.

With the above primary object and other incidental objects in view the invention consists of the devices and parts or their equivalents, as hereinafter set forth.

In the accompanying drawings, Figure l is an elevation of my improved device, showing the same properly applied to a window-frame andlocked in place therein,the view only illustrating the lower Window-sash. Fig. 2 is an elevation of the casing of the device, one side being removed to show interior parts. Fig. 3 is a plan View of Fig. 1, the `window-frame being in section; and Fig. 4t is a View at right angles to Fig. l, but illustrating both windowsashes.

Referring to the drawings, the numeral 5 indicates the casing of the device, which may be of any desirable form of construction, although the form shown in the accompanying illustrations is best adapted for accommodating the several parts of the mechanism. Within the casing is arranged a slidable trigger 6, which is guided in its movement by means of an overlapping,guide-strip 7.

The numeral 8 indicates aham mer, the inner end of which being disposed between the sides of the casing and being pivoted on a transverse pivot-pin 9. The hammer extends outside of the casing through a slot 10 and near its outer end is provided with a hammer-head 1l, which when the hammer is actuated will be forcibly brought into contact With the bottom of a cartridge chamber or recess 12. The inner end of the hammer is provided on one edge with a shoulder 13, with which the end of the trigger is adapted to engage in order to hold the hammer in cocked adjustment, as most clearly shown in Fig. 2.

The numeral 14 indicates a curved ledge provided at one end with a box-like formation 15, in which theend of a coiled spring 16 is received. This box 15 prevents the spring from buckling or jumping out of place when the hammer is raised. The spring extends along the ledge 14 for a desired distance, and the end of the spring bears against a lug 17, projecting from the hammer. The lug 17 has extending therefrom a short stud or pin 1S, which passes into the coils of the spring, and thereby holds the spring in place and prevents it from slipping or rubbing against the ledge 14 when the hammer is cocked or uncocked. The lower end of the trigger is provided with an outstanding lug 19, from which extends a contact-pin 20, said pin passing out of the end of the casing and being provided near its outer end with an enlargement 21. The slidable trigger is furthermore provided with an elongated slot 22, and extending through this slot and entering one side of the casing is a small stud 23, provided at its end withadownwardly-extendinglug24. Acoiled spring 25 is arranged Within the slot, and one end of said spring bears against the lower end wall of the slot, and the opposite end of -said spring bears against the stud 23.

The casing hereinbefore described is adapted to be Iitted to and releasably locked in the side grooveway of the window-frame. To accomplish the locking, I provide a thumb-1ever 26, pivoted at its upper end to the casing, said upper end being provided with an enlargement 27. This enlargement is formed at one edge with a segmentally-toothed portion 2S and at its opposite edge with a cam 29, said cam edge being preferably beveled or sharpened, as most clearly shown in Fig. 3, so as to bite into the side of the groove of the window-frame.

In applying the device the thumb-lever is thrust upwardly to the extent permitted by contact of said lever with a stop-pin 30. The device is then inserted in the groove of the IOO window-frame, with the side carrying the lever 26 innermost. The lever is then grasped and forced downwardly. Vith this downward movement the teeth are brought into engagement with one of the side edges of the groove of the window-frame, while the opposite cam edge of the enlargement is brought into engagement with the opposite side wall of the groove of the window-frame, the said cam edge having a wedging effect and securely locking the device in place.

In the drawings I have indicated the window-frame bythe numeral 3l, the side groove for the lower sash by the numeral 32,the side groove for the upper sash by the numeral 33, the lower window-sash by the numeral 34, and the upper window sash by the numeral 35.

As shown clearly in Figs. l and 4, the top rail ofthe lower sash bears against the end of the pin or projection 20. It is evident, therefore, that if an attempt is made to raise this lower sash force will necessarily be exerted against the pin 2O and cause said pin to be moved inwardly, and the pin in turnl will cause a movement of the trigger against the contrary force exerted by the spring 25. As said trigger is thus actuated its end will be released froml engagement with the shoulder 13 of the hammer, and the moment this release occurs the spring 16 will cause a forcible turning of said hammer. This turning of the hammer will bring the hammer-head ll thereof into forcible contact with a cartridge placed' in the chamber l2, and hence cause an explosion of said cartridge and a consequent loud report in order to awaken the inmates of the house, and thereby advise them that an attempt to burglarize is being made. The function of the spring 25 is of course to return the slidable trigger and the pin 2O to normal position the moment pressure on the end of said pin is removed.

Fig. 4 illustrates the construction wherein both window-sashes are locked and an alarm is given in case it is attempted to open either the upper or lower sashes. Referring to this mechanism, the numeral 3G indicates a lever which is pivoted at a medial point to a projecting lug 37. The short arm of this lever is pointed in order to engage the edge of the upper window-sash, and the extremity of the long arm of said lever is bifurcated or slotted, as clearly shown in Fig. 2. The furcate parts loosely straddle the pin 20, and the lever bears against the enlargement 2l of the pin, the lower end of said pin extending below the plane of the under side of the lever. From this construction it will be evident that when the lower sash is raised it will contact with the end of the pin which projects below the end of the long arm of the lever and cause an actuation of said pin and a sounding of the alarm in the manner hereinbefore fully pointed out. It will also be ,observed that in this movement the lever 36 is not moved, in-

asmuch as the pin 2O passes loosely through the bifurcated end of said lever, and consequently the point of the sharp end ofthe lever is left in engagement with the upper sash. If now an attempt is made to lower the upper sash, the down movement of said sash will canse a downturning of the short arm of the lever, and hence an up movement of the long arm thereof. This long arm will act against the enlargement 2l, and thereby actuate the pin 2O and likewise cause a sounding of the alarm.

The inner side of the casing is preferably provided with a stop 38. (Shown byvdotted lines in Fig. l of the drawings.) This stop is advisably employed to prevent the casing from being forced out of locked position in the groove of the window-frame when an attempt is made to lower the upper sash. Itis evident that when a downward force is exerted on the upper sash andthe lever 36 thereby turned the force thus exerted has a tendency to throw the lower end of the casing laterally. By the provision, however, of the stop 38, arranged as described, the said stop would under such circumstances contact with the side edge of the groove 32, and hence prevent the casing from being forced out of said groove. The stop 38 advisably stands out from the side of the casing, so as to leave a space between said side and the inner side of the stop. This permits the thumb-lever when the device is not in use to be turned down into said space, whereby the stop serves as a keeper for the lever and holds it com pactly to the casing, thus economizing room and facilitating the shipment of the devices.

What I claim as my invention is- 1. The combination of a casing or support, a movable alarm actuating device, alarm IOO mechanism adapted to be sounded by the actuating device, when said device is moved in one direction, and a medially-pivoted lever having one arm in position to be actuated by a movable device and thereby move the alarmactuating mechanism in one direction to sound the alarm, and said alarm-actuating device being in position to 'be engaged by another movable'devicaand likewise sound the alarm.

2. The combination of a casing or support, a movable alarm-actuating device projecting from the casing, and provided above its lower extremity with an enlargement, alarm mechanism adapted to be sounded by the actuating device, when said device is moved in one direction, and a mediallypivoted lever having one arm in position to be actuated by a movable device, and having its other arm engaging the enlargement of the actuating device, whereby when the movable device acts on one arm of the lever the other arm thereof is causedto act on the enlargement of the actuatingdevice, and thereby move said device in one direction to sound the alarm, and the end of said alarm-actuating device being IIO in position to be engaged by another movable device and to beilikewise caused to sound the alarm.

3. The combination of a casing or support, alarm mechanism carried thereby and adapted to be actuated by a movable device, and a lever pivoted to the casing, said lever provided at one end with an enlargement the opposite edges of said enlargement adapted, when the lever is turned in one direction, to clamp the casing in the groove of the windowframe. A

4. The combination of a casing or support, alarm mechanism carried thereby and adapted to be actuated by a movable device, a pivoted lever provided at one end with an enlargement, one edge of said enlargement provided with a series of teeth adapted, when the lever is turned in one direction, to engage into the side wall of a groove in the device to which the casing is applied, and the opposite edge of said enlargement being in the form of a cam adapted at the same time to engage the opposite side wall of the groove, and thereby lock the casing relcasably in position.

5. The combination of a casing or support provided upon its inner side, at the lower lateral edge of said side, with an outstanding stop, a space being formed between said stop and the side of the casing, a lever pivoted to the casing and provided at one end with means for locking the casing in the grooveway of a window-frame, or other device, and the other end of said lever adapted, when the device is not in use, to fit in the space between the stop and the side of the casing, and locking mechanism and alarm mechanism carried by the casing.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL RITCHIE. Witnesses:

S. H. ALBAN, GEORGE AMES. 

